too much ias in my opinion

i've seen a few zod-eth-4* 40 ed/15 max robozerkers

they do (non superior 160% ed) approximately 93-334
thats roughly a 295% cruel zerker of evisc eth'd

best way to get ias for that type of robo item is

20% from glove
20% from amulet
15% from armor+15% from helm/shield OR 30% from armor

which gives you 70% ias you can switch the 20% ias gloves for 10% ias ( such as bloodfist or blood craft) which will still give you 4 frame zeal animation (60% ias+)